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  • 1
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    Survey of different dietary energy and protein levels on the reproduction indices of Benni (Barbus sharpeyi) broodstock (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The survey of different protein and energy levels of brooders Benni(Mesopotamichthys sharpeyi) diet on reproductive indices This study,to preparation of suitable diet for brooders of Benni(Mesopotamichthys sharpeyi) carried Out increasing efficiency artificial propagation and achievement to maximum working fecundity and fingerling production. 9 dietary feeding with 3 triplication were prepared that included 3 protein levels(30,35 and 40 percentage) and 3 different levels of digestable energy (250,300 and 350 kcal/100g).The reproductive indices (working fecundity, fertilization, hatching and survival rate) were studied in this experiment in South Iran Aquaculture Research Center .12 female brooders in any triplication were transported to earthern ponds 300 m2. They were fed 2 times in days for 4 month until satiation.The artificial breeding carried out in spring for survey of reproductive indices. The amount of hypophysis injection was 3mg/kg weight of fish with two doses10% in first stage and 90% in second stage with interval 10 Hour . The male broodstock injection was first stage spantanously with second females injections with a dose of 2 mg/kg.The total of breeding stages until larvae release was registered 22.5-24.5°C. Result showed that constant protein (35%) with rising energy until specified amount(350 Kcal/100g) was increased reproductive indicies.The working fecundity is one of the reproductive indices that in treatment 5 had significant difference compare to other treatment.In this survey, Comparison between different levels of dietary protein and energy on the brooders Benni indicated that 35% protein level and 350 Kcal/100g energy for barbus grypus had best efficiency in diet of broodstock.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Brooder diet ; Benni ; Mesopotamichthys sharpeyi ; Reproductive indices ; Dietary ; Protein ; Level
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 42pp.
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  • 2
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    Preliminary study on induction of triploidy in Benni (Barbus sharpeyi) by thermal shocks (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Barbus sharpeyi is a local fish of Khouzestan that is planned to be a target for aquaculture in recent programs of fisheries organization. Considering importance of this species in its dispersal region, the main goal of this project was evaluation of possibility for triploidy induction and its potential in response to the heat shocks, efficiency of viability and growth and finally reporting the best condition for triploidy induction in Benny. Induction of thermal shocks was executed in for cold and heat shocks (2 and 4°C for cold and 34, 36 and 38°C for heat). Time of induction and its duration varied between 2 and 5 minutes after the fertilization for 3 and 5 minutes. Each treatment was repeated for 3 times. The ploidy level was determined based on size of nucleus diameters in erythrocytes. Analysis of data was done by SPSS (ver. 16) using T-test and ANOVA method. Results showed that the maximum number of triploid individuals was obtained in treatment of 38°C, 2 min after the fertilization by duration of 3 minutes but as the condition was not suitable for the viability of the eggs, losses of the larvae was high in this group. The best efficiency of triploidization in B. sharpeyi belongs to the 34°C, 2 to 5 minutes after the fertilization for duration of 5 minutes. Nuclear dimensions showed an increase in triploids and confirmed that this characteristic can be used as a reliable factor to distinguish polyploidy. Results of this study showed that B. sharpeyi has the ability for polyploidy inductions specially heat shocks. Evaluation of growth in matured fishes, use of proper tagging systems to distinguish the treatments and designing a plan for bioconserving and genetic improvement of this species is recommended.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaculture ; Triploidy ; Benni ; Barbus sharpeyi ; Thermal shocks ; Species ; Growth ; Fertilization ; ANOVA ; Bio conserving ; Genetic
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 72pp.
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  • 3
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    The survey of possibility of bluga (Huso huso) sturgeon culture in different densities in Khuzestan provience (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: The influence of stocking density was investigated on growth, survival and FCR of great sturgeon (Huso huso) juvenile in north of Khuzestan province (Dezful). The study was conducted by Southern Iran Aquaculture research center. This study was done from September 2013 to July 2014 in three stage with different weight of Huso huso juveniles. In the first stage density of 1.5, 3 and 6 kg/m2 during two month was performed. The initial weight and length of fish in this stage considered as 143±0.29 g and 316±1.1 mm. In the second stage 3, 6 and 9 kg/m2 density were introduced. The initial weight and length of fish in this stage considered as 548.58±33.26 g and 416.5±0.81 mm and duration of the stage was 84 days. In the third stage 6, 9 and 12 kg/m2 density were introduced and initial weight and length were 1571.33±71.33 g and 687.5±10.96 mm. Growth and feeding index were assess in each stage. In the first stage monthly blood samples were collected from each density. In this stage bold and hormonal indices were assessed. The results showed that the average final weight in stage 1 in 1.5, 3 and 6 kg/m2 densities were 527.27±6.82 g, 467.91±18.81 g and 431.02±24.25 g respectively. The highest average of weight was in treatment 1 and it has significant difference with treatment 3 (P〈0.05). FCR was lower than 0.7 in every treatment. FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. In the second stage, average final weight of Huso huso was 1734.91±97.65g, 1525.88±57.20 g and 1370.95±1593 g respectively. The highest average weight was in treatment 1 and has significant difference with treatment 2 (P〈0.05) FCR in treatment 1, 2 and 3 were 0.92±0.2, 0.96±0.26 and 1.11±0.36 respectively and there is no significant difference between them (P〉0.05). FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. Daily growth rate in treatment 1, 2 and 3 were 13.93±2.83, 11.44±2.65 and 9.6±2.49 respectively. In the third stage the average final weight in 6, 9 and 12 kg/m2 densities were 3232.22±66.12g, 3407.39±119.73g and 2869.72±135.7g. The highest average weight was in treatment 2 and has significant difference with treatment 3 (P〈0.05). FCR in treatment 1, 2 and 3 were 1.19±0.2, 1.25±0.1 and 1.45±0.27 respectively and there is no significant difference between them (P〉0.05). FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. Daily growth rate in treatment 1, 2 and 3 were 20.37±3.12 g/day, 19.90±4.2 g/day and 16.36±3.64 g/day respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Bluga ; Huso huso ; Sturgeon ; Density
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 74pp.
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  • 4
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    Preliminary study on induction of triploidy in Benni (Barbus sharpeyi) by thermal shocks (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25625 | 18721 | 2018-10-07 16:59:50 | 25625 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Barbus sharpeyi is a local fish of Khouzestan that is planned to be a target for aquaculture in recent programs of fisheries organization. Considering importance of this species in its dispersal region, the main goal of this project was evaluation of possibility for triploidy induction and its potential in response to the heat shocks, efficiency of viability and growth and finally reporting the best condition for triploidy induction in Benny. Induction of thermal shocks was executed in for cold and heat shocks (2 and 4°C for cold and 34, 36 and 38°C for heat). Time of induction and its duration varied between 2 and 5 minutes after the fertilization for 3 and 5 minutes. Each treatment was repeated for 3 times. The ploidy level was determined based on size of nucleus diameters in erythrocytes. Analysis of data was done by SPSS (ver. 16) using T-test and ANOVA method. Results showed that the maximum number of triploid individuals was obtained in treatment of 38°C, 2 min after the fertilization by duration of 3 minutes but as the condition was not suitable for the viability of the eggs, losses of the larvae was high in this group. The best efficiency of triploidization in B. sharpeyi belongs to the 34°C, 2 to 5 minutes after the fertilization for duration of 5 minutes. Nuclear dimensions showed an increase in triploids and confirmed that this characteristic can be used as a reliable factor to distinguish polyploidy. Results of this study showed that B. sharpeyi has the ability for polyploidy inductions specially heat shocks. Evaluation of growth in matured fishes, use of proper tagging systems to distinguish the treatments and designing a plan for bioconserving and genetic improvement of this species is recommended.
    Keywords: Biology ; Iran ; Khouzestan Province ; Triploidy ; Benni ; Barbus sharpeyi ; Thermal shocks ; Species ; Growth ; Fertilization ; ANOVA ; Bio conserving ; Genetic
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 72
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  • 5
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    The survey of possibility of beluga (Huso huso) sturgeon culture in different densities in Khuzestan province (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25634 | 18721 | 2018-10-14 02:42:53 | 25634 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The influence of stocking density was investigated on growth, survival and FCR of great sturgeon (Huso huso) juvenile in north of Khuzestan province (Dezful). The study was conducted by Southern Iran Aquaculture research center. This study was done from September 2013 to July 2014 in three stage with different weight of Huso huso juveniles. In the first stage density of 1.5, 3 and 6 kg/m^2 during two month was performed. The initial weight and length of fish in this stage considered as 143±0.29 g and 316±1.1 mm. In the second stage 3, 6 and 9 kg/m2 density were introduced. The initial weight and length of fish in this stage considered as 548.58±33.26 g and 416.5±0.81 mm and duration of the stage was 84 days. In the third stage 6, 9 and 12 kg/m^2 density were introduced and initial weight and length were 1571.33±71.33 g and 687.5±10.96 mm. Growth and feeding index were assess in each stage. In the first stage monthly blood samples were collected from each density. In this stage bold and hormonal indices were assessed. The results showed that the average final weight in stage 1 in 1.5, 3 and 6 kg/m^2 densities were 527.27±6.82 g, 467.91±18.81 g and 431.02±24.25 g respectively. The highest average of weight was in treatment 1 and it has significant difference with treatment 3 (P〈0.05). FCR was lower than 0.7 in every treatment. FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. In the second stage, average final weight of Huso huso was 1734.91±97.65g, 1525.88±57.20 g and 1370.95±1593 g respectively. The highest average weight was in treatment 1 and has significant difference with treatment 2 (P〈0.05) FCR in treatment 1, 2 and 3 were 0.92±0.2, 0.96±0.26 and 1.11±0.36 respectively and there is no significant difference between them (P〉0.05). FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. Daily growth rate in treatment 1, 2 and 3 were 13.93±2.83, 11.44±2.65 and 9.6±2.49 respectively. In the third stage the average final weight in 6, 9 and 12 kg/m^2 densities were 3232.22±66.12g, 3407.39±119.73g and 2869.72±135.7g. The highest average weight was in treatment 2 and has significant difference with treatment 3 (P〈0.05). FCR in treatment 1, 2 and 3 were 1.19±0.2, 1.25±0.1 and 1.45±0.27 respectively and there is no significant difference between them (P〉0.05). FCR, condition factor, daily growth, special growth index, BWI and food performance index have not significant difference in treatments. Daily growth rate in treatment 1, 2 and 3 were 20.37±3.12 g/day, 19.90±4.2 g/day and 16.36±3.64 g/day respectively.
    Keywords: Aquaculture ; Iran ; Khuzestan provience ; Survey ; Bluga ; Huso huso ; Sturgeon ; Density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 74
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  • 6
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    Effects of varying dietary energy levels on growth performance and wholebody composition in Gattan (2021)
    In:  http://aquaticcommons.org/id/eprint/24867 | 18721 | 2018-11-22 07:06:00 | 24867 | Khorramshahr University of Marine Science and Technology
    Details
    Publication Date: 2021-07-15
    Description: Study was conducted to investigate the effects of various energy levels on growth performance, food conversion ratio (FCR) and whole body composition in Gattan, Barbus xanthopterus fingerlings (12.12±0.28 g) for 8 week. Feeding trial was conducted using 3 semipurfied diets containing 3 levels of digestible energy (DE 2.5, 3 and 3.5 kcal/g) and same protein level 35%, in a flow-through system (1L/min) at 26.2 ± 0.460C. Triplicate groups of 15 fish (12.12±0.22 g) each were stocked in 300-L circular polyethylene tanks and fish were fed to satiety thrice daily throughout the feeding trial. The best of total weight gain (146.67 g), FCR (2.21), protein efficiency ratio (1.31), apparent net protein utilization (ANPU %) (34.69) and condition factor (CF) (1.26) were observed in diet containing 3 kcal/g DE. The viscerosomatic index (VSI) and hepatosomatic index (HSI) did not show any significant difference between treatments (P〉0.05). The final whole body moisture content decreased significantly with increasing energy levels in diets (P〈0.05). Although whole body lipid and protein contents did not show significant variation among treatments (P〉0.05), but the highest lipid and protein deposition were observed in diets containing 3.5 and 3kcal/g DE, respectively. Comparison between varying levels of dietary energy on the growth, feed utilization and whole body composition of Gattan indicated that 3 kcal/g DE could be the preferential dietary energy levels in fingerlings of this species.
    Keywords: Aquaculture ; Biology ; Dietary ; Energy ; Level ; Growth ; Whole body composition ; Gattan (B. xanyhopterus) ; Barbus xanthopterus ; Fingerlings ; Feeding ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 53-64
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  • 7
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    Survey of different dietary energy and protein levels on the reproduction indices of Benni (Barbus sharpeyi) broodstock (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25789 | 18721 | 2018-10-13 08:08:50 | 25789 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The survey of different protein and energy levels of brooders Benni (Mesopotamichthys sharpeyi) diet on reproductive indices This study, to preparation of suitable diet for brooders of Benni (Mesopotamichthys sharpeyi) carried Out increasing efficiency artificial propagation and achievement to maximum working fecundity and fingerling production. 9 dietary feeding with 3 triplication were prepared that included 3 protein levels (30,35 and 40 percentage) and 3 different levels of digestable energy (250, 300 and 350 kcal/100g).The reproductive indices (working fecundity, fertilization, hatching and survival rate) were studied in this experiment in South Iran Aquaculture Research Center .12 female brooders in any triplication were transported to earthen ponds 300 m2. They were fed 2 times in days for 4 month until satiation. The artificial breeding carried out in spring for survey of reproductive indices. The amount of hypophysis injection was 3mg/kg weight of fish with two doses10% in first stage and 90% in second stage with interval 10 Hour. The male broodstock injection was first stage spantanously with second females injections with a dose of 2 mg/kg. The total of breeding stages until larvae release was registered 22.5-24.5°C. Result showed that constant protein (35%) with rising energy until specified amount (350 Kcal/100g) was increased reproductive indicies. The working fecundity is one of the reproductive indices that in treatment 5 had significant difference compare to other treatment. In this survey, Comparison between different levels of dietary protein and energy on the brooders Benni indicated that 35% protein level and 350 Kcal/100g energy for barbus grypus had best efficiency in diet of broodstock.
    Keywords: Aquaculture ; Iran ; Survey ; Brooder diet ; Benni ; Mesopotamichthys sharpeyi ; Reproductive indices ; Dietary ; Protein ; Level
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 42
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